Ko da a lokacin sanarwar katunan bidiyo na farko na GeForce RTX 20, mutane da yawa sun yi imanin cewa Turing GPUs ba su da ƙarancin girman kasancewar ƙarin raka'a: RT cores da tensor cores. Yanzu, ɗaya mai amfani da Reddit ya bincika hotunan infrared na Turing TU106 da TU116 GPUs kuma ya kammala da cewa sabbin na'urorin kwamfuta ba su ɗaukar sarari da yawa kamar yadda ake tunani da farko.
Da farko, bari mu tuna cewa Turing TU106 GPU shine ƙarami kuma mafi ƙarancin NVIDIA guntu tare da muryoyin RT na musamman don gano ray da muryoyin tensor don haɓaka ayyukan sirri na wucin gadi. Hakanan, Turing TU116 graphics processor, wanda ke da alaƙa da shi, an hana waɗannan na'urori na musamman na kwamfuta don haka ne aka yanke shawarar kwatanta su.
An rarraba NVIDIA Turing GPUs zuwa raka'a TPC, waɗanda suka haɗa da nau'ikan nau'ikan sarrafawa masu yawa (Streaming Multiprocessors), waɗanda suka riga sun haɗa da duk abubuwan sarrafa kwamfuta. Kuma kamar yadda ya fito, Turing TU106 GPU yana da kawai 1,95 mm² ƙarin yankin TPC fiye da Turing TU116, ko 22%. Daga cikin wannan yanki, 1,25 mm² don muryoyin tensor ne, kuma 0,7 mm² kawai don muryoyin RT.
Ya bayyana cewa ba tare da sabon nau'in tensor da RT ba, flagship Turing TU102 graphics processor, wanda ke ƙarƙashin GeForce RTX 2080 Ti, ba zai mamaye 754 mm² ba, amma 684 mm² (36 TPC). Hakanan, Turing TU104, wanda shine tushen GeForce RTX 2080, zai iya ɗaukar 498 mm² maimakon 545 mm² (24 TPC). Kamar yadda kuke gani, ko da ba tare da tensor da RT ba, tsofaffin GPUs na Turing zasu zama manyan kwakwalwan kwamfuta. Mahimmanci ƙarin Pascal GPUs.
To menene dalilin girman girman irin wannan? Don masu farawa, Turing GPUs sun sami manyan cache masu girma dabam. Girman inuwa kuma an ƙara girma, kuma Turing chips suna da manyan tsarin koyarwa da manyan rajista. Duk wannan ya ba da damar haɓaka ba kawai yankin ba, har ma da aikin Turing GPUs. Misali, GeForce RTX 2060 iri ɗaya bisa TU106 yana ba da kusan matakin aiki ɗaya kamar na GeForce GTX 1080 dangane da GP104. Ƙarshen, ta hanyar, yana da 25% mafi girman adadin CUDA, ko da yake ya mamaye wani yanki na 314 mm2 da 410 mm2 don sabon TU106.
source: 3dnews.ru